scholarly journals Improvement of Optical and Thermal Properties for Quantum Dots WLEDs by Controlling Layer Location

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 77642-77648 ◽  
Author(s):  
Yong Tang ◽  
Hanguang Lu ◽  
Jiasheng Li ◽  
Zongtao Li ◽  
Xuewei Du ◽  
...  
Author(s):  
Ruoting An ◽  
Heng Gao ◽  
Shuangshuang Shi ◽  
Guantong Chen ◽  
Yonghui Zhang ◽  
...  

ACS Omega ◽  
2020 ◽  
Vol 5 (34) ◽  
pp. 21345-21354
Author(s):  
Esraa Hamdy ◽  
Laila Saad ◽  
Fuad Abulfotuh ◽  
Moataz Soliman ◽  
Shaker Ebrahim

2008 ◽  
Vol 153 (1) ◽  
pp. 365-368 ◽  
Author(s):  
T. A. El-Brolossy ◽  
S. Abdallah ◽  
T. Abdallah ◽  
M. B. Mohamed ◽  
S. Negm ◽  
...  

2021 ◽  
pp. 1-8
Author(s):  
F.S. Nammas ◽  
Eyad Hasan Hasan ◽  
A.N. Alnowafa

In this study, we theoretically scrutinize the effect of the inverse-square interaction on the thermal properties of two electrons trapped in a parabolic GaAs quantum dot. The analytical energy spectrum was used to calculate the thermal properties of the system using the canonical ensemble formalism. It was found that the thermal energy increased with the increase in temperature, while it remained almost constant for sufficiently low temperatures; it was also demonstrated that the inverse-square interaction increased the thermal mean energy. Moreover, the heat capacity increased sharply within a low-temperature window and saturated to the value of 2kB in the high-temperature limit. As expected, entropy increased linearly with increasing temperature. It was also shown that both entropy and heat capacity decreased rapidly when the confinement strength increased (or the dot size decreased) in the low-temperature limit, regardless of the influence of the interaction between the electrons. We also show that the number of allowed states of the system decreased as the interaction strength increased (Z(λ = 0) > Z(λ ≠ 0)). Finally, the stability of the system was investigated through F–T curves. The three-dimensional surface for the temperature-dependent mean energy and heat capacity was also plotted. It should be noted that, for the thermal mean energy, partition function, and Helmholtz free energy, the normal physical behavior of the two-oscillator system with Fermi statistics is recovered for λ → 0. However, heat capacity and entropy show exact two-fermion oscillator system behavior. The most impressive result found in this work is that the inverse-square interaction does not affect the heat capacity and entropy at all despite its noticeable effects on the thermal mean energy. This, in turn, facilitates theoretical studies related to finding the distinctive parameters of quantum dots without going into the heavy calculations resulting from the effects of interactions.


RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1262-1267 ◽  
Author(s):  
Manish Kumar ◽  
Sandeep Kumar

The effects of highly luminescent alkylamine-capped semiconductor cadmium telluride quantum dots (CdTe QDs) dispersion on the optical, electrical, thermal properties and supramolecular order of a discotic liquid crystal were studied.


2016 ◽  
Vol 45 (10) ◽  
pp. 4755-4761 ◽  
Author(s):  
Amr M. Abd-Elhady ◽  
Mohamed E. Ibrahim ◽  
T. A. Taha ◽  
Mohamed A. Izzularab

2013 ◽  
Vol 13 (1) ◽  
pp. 434-442 ◽  
Author(s):  
Nguyen Ngoc Trung ◽  
Quynh-Phuong Luu ◽  
Bui Thanh Son ◽  
Le Hoang Sinh ◽  
Jin-Young Bae

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